Asbestos is the single biggest legal and safety variable on any Sydney demolition project. The rules are strict, the penalties are real, and the impact of getting it wrong is measured in lives. This guide walks owners through their legal duties under SafeWork NSW rules, what to expect from a licensed contractor, and how to plan the asbestos component of your project correctly.
Where you'll find asbestos in a Sydney home
Most Australian homes built before 1990 contain asbestos somewhere. Common locations:
- Eaves & soffits (bonded asbestos cement sheet)
- External wall cladding (fibro)
- Internal bathroom & laundry wall sheeting
- Vinyl floor tile backing
- Roof tiles & gutters
- Fence sheeting
- Lagging on hot water systems
- Old electric meter boards
Commercial buildings of the same vintage may also contain friable asbestos in fire-proofing, lagging on pipework, and vermiculite ceilings.
Bonded vs friable asbestos
Bonded (non-friable) asbestos is mixed with cement or another binder and only releases fibres when broken, drilled, sanded or weathered. Friable asbestos crumbles by hand and is much more dangerous. Different licence classes apply:
- Class A — can remove any asbestos (friable + bonded)
- Class B — bonded asbestos only, more than 10 m²
For unlimited NSW demolition work the contractor must hold the appropriate SafeWork demolition licence and engage Class A or B removalists as required.
Your legal duties as the owner
SafeWork NSW puts specific duties on the person commissioning demolition work — that's usually the property owner or developer. Before any demolition can start, you must:
- Arrange a written hazardous materials (hazmat) survey by a competent person.
- Provide a copy of the survey to the demolition contractor.
- Ensure all identified asbestos is removed by a licensed asbestos removalist before structural demolition begins.
- Retain the clearance certificate.
- Notify SafeWork NSW at least 5 days before friable asbestos removal starts.
Why timing matters
Asbestos removal sits on the critical path of every demolition. If the survey identifies friable asbestos, you'll need a 5-day SafeWork notification, full enclosure with negative-pressure ventilation, and a clearance inspection before the structural demolition can start. Don't be tempted by contractors who promise to "do it all in one day" — that's how people get prosecuted. Read our timeline article on how long a Sydney house demolition takes for realistic sequencing.
What about commercial buildings?
Commercial demolition projects almost always include a separate hazmat scope — sometimes 10–25% of the total programme. Friable asbestos in fire-proofing on structural steel is particularly difficult to remove. If you're planning a commercial demolition project, factor this in early.
Common mistakes
- Assuming "no fibro on the walls" means no asbestos — eaves, bathrooms and floor tile backings are often missed.
- Choosing a contractor without a hazmat survey — they're guessing your budget.
- Disposing of asbestos with general waste — fines start at $4,000 per offence for individuals.
- Letting a non-licensed labourer "just rip down a few sheets" — this is illegal under NSW law.
How we handle asbestos at Defence Demolition
We coordinate licensed asbestos removalists for every job that needs it, manage the SafeWork notification, attend the clearance inspection, and retain the certificate for your records. You get one contact, one quote, one timeline. Get in touch if you want to talk through your specific project.
Frequently asked questions
Who is responsible for the asbestos survey?+
The owner or developer commissioning the demolition. SafeWork NSW places the duty on the person engaging the work, not the contractor.
Can I remove a small amount of asbestos myself?+
In NSW, a homeowner can remove up to 10 m² of bonded asbestos themselves under strict rules, but for any demolition project a licensed removalist is required.
How long does asbestos removal take?+
Bonded asbestos on a typical Sydney house takes 2–4 days plus a clearance inspection. Friable asbestos needs full enclosure and a 5-day SafeWork notification first.
What happens if asbestos is found mid-demolition?+
Work stops, the unexpected find is isolated, and a licensed removalist is engaged before demolition resumes. Good contractors quote with a contingency for this.